\documentclass[crop, tikz]{standalone}
\usepackage{tikz}
\usepackage{braids}

\newcommand{\bond}[3]{
\draw[very thick, #1] (#3, 0) -- (#3, 0.35);
\draw[very thick, densely dotted] (#3, 0.35) -- (#3, 0.65);
\draw[very thick, #2] (#3, 0.65) -- (#3, 1);
}

\begin{document}
\begin{tikzpicture}
	\bond{red}{blue}{0.1}
	\bond{red}{blue}{0.25}
	\bond{red}{blue}{0.4}
	\bond{blue}{red}{1.1}
	\bond{blue}{red}{1.25}
	\bond{blue}{red}{1.4}
	\bond{red}{blue}{2.1}
	\bond{red}{blue}{2.25}
	\bond{red}{blue}{2.4}
	\bond{blue}{red}{3.1}	
	\bond{blue}{red}{3.25}
	\bond{blue}{red}{3.4}
	\bond{red}{blue}{4.1}
	\bond{red}{blue}{4.25}
	\bond{red}{blue}{4.4}
	\bond{blue}{red}{5.1}
	\bond{blue}{red}{5.25}
	\bond{blue}{red}{5.4}
	\bond{red}{blue}{6.1}
	\bond{red}{blue}{6.25}
	\bond{red}{blue}{6.4}
	\bond{blue}{red}{7.1}
	\bond{blue}{red}{7.25}
	\bond{blue}{red}{7.4}
	\bond{red}{blue}{8.1}
	\bond{red}{blue}{8.25}
	\bond{red}{blue}{8.4}
	\braid[rotate=90,style strands={1}{red, very thick},style strands={2}{blue, very thick}] (tst) at (0, 0) s_1 s_1 s_1 s_1 s_1 s_1 s_1 s_1;
\end{tikzpicture}	
\end{document}
